Wrench



Patented Nov. 24, 19 25.

1 UNITED STATES PATENT OFFICE.

' JACOB M. TWEIT, F HOLCOMBE, WISCONSIN.

WRENCH.

Application filed May 27, 1924. Serial No. 716,232.

a full, clear, and exact description of the invention, such as willenable others skilled l in the art to which it appertains to make anduse the same.

This'invention relates to wrenches, and has for one of its objects theprovision of a device of this character which shall include a handlethrough the medium of which the jaws may be easily and quickly adjustedto fit bolt heads and nuts of different sizes, and through the medium ofwhich the jaws may be constantly urged in the direction of each otherduring the turning of a bolt or nut so as to prevent any casual movementbetween the wrench and the part being turned.

A further object of the invention is the provision of a wrench whereinthe jaws will be positively held against any relative axial or turningmovements.

A still further object of the invention is the provision of a wrenchwhich may be used to hold a bolt against movement during the applicationof a nut thereto or the removal of the nut therefrom.

With the above and other objects in view, the invention consists in theconstruction, combination, and arrangement of parts hereinafter fullydescribed and claimed, and illustrated in the accompanying drawing,wherein:

Figure 1 is a view in side elevation of a wrench constructed inaccordance with my invention,

Fig. 2 is a sectional view taken on a plane extending centrally andlongitudinally through the wrench,

Fig. 3 is a detail sectional View taken on the plane indicated by theline 3-3 of Fig. 2,

Fig. 4 is a detail sectional view taken on the plane indicated by theline H of Fig. 1

Fig. 5 is a detail Sectional view taken on the plane indicated by theline 55 of Fig. 2, and

Fig. 6 is a detail view illustrating a slightly modified construction ofthe jaws of the wrench. I

The wrench comprises a bar. 1 which is preferably of ellipticalformation in crosssectionand which is provided at one end-- with aninner or relatively stationary jaw 2. The bar 1 is provided with a boreexv tendingthroughout the entire length there of and having a portion 3ofelliptical formation in cross-section and a portions of cylindricalformation. The outer end of the cylindrical portion 4 ofthebore of thebar 1 is counterbored to provide a socket 5 in which the inner end of ahollow handle 6 l is rotatably mounted. A nut 7 is secured within theinner end of" the handle 6 by a screw 8 which due to its locationwithinthe socket 5 is held against accidental dis placement. I

A shank 9 of elliptical formation in cross section is slidably mountedin the'bore of end with an outer or relatively movable jaw 10. The shank9 has a snug fit in the elliptical portion 3 of the bore of the bar 1 toprevent any relative lateral or rotary movements of the jaws 2 and 10.At its inner end, the shank 9 is provided with a "the bar 1, and it isprovided at its outer reduced threaded stem 11 which passes freelythrough a washer or abutment 12 secured by screws 13 within the socket 5inwardly of the inner end of the handle 6 and which passes through thenut 7 into the handle 6, the stem having screw-threaded engagement withthe nut.

the cylindrical portion 1 of the bore of the A spring 14;, V whichsurrounds the stem 11, is mounted in rod 1 between the washer 12 and awasher 15 positioned upon thestem in contact with the inner end of theshank 9, and serves in conjunction with the handle 6 to prevent the jaws2 and 10 from having any casual relative axial movements. To prevent thestem 11 from being disconnected from the handle 6 during the outwardadjustment of the jaw 10, the stem is provided with a cotter-pin 16, ata point outwardly beyond the nut 7.

Preferably, the jaw 10 is provided with a smooth active face 17 and thejaw 2 with a toothed active face 18, the toothed active face permittinga firm j grip to be secured upon a nut or head of a bolt. Both jaws 2and 10 are provided with flanges 19 which 9 are adapted to be insertedbeneath thehead of a round-headed bolt when it is desired to use thewrench tor-the purposeof holding the bolt against turning movement whileap plying a nut to or removing it from the bolt.

The flanges 19 are located at corresponding sides of the jaws 2 and 10,and they extend beyond the active faces of the jaws, and their innersides are inclined vastshown in nutengaging jaws 2 and 10. The pipeengagingjaws-ZF and 10 are provided'with toothed-arcuate active facesEZO'endMQl, re-

Speotively,

F rem the foregoing description, taken no connection with theaccompanying draws ing,.it will be seen that the jaws are adapted tobed-adjusted through a-turning movement of the, handle. 6, and thatowing thereto the jaws. may be readily adjusted and constantly urgedinthe directionof each other while I i the wrench-1s 1111138. The spring li'tunctions to prevent casual inward movement of the aw 10 andcasualrotationofthe handle 6. The flanges 19 onthe jaws 2 and a 10 adaptthewrenoh toruse as a bolt holder,

and when so used the flanges engage the inner side of the bolt head andthe jaws engagev thenlateral sides of thebolt head. Ifa-i'terbeingapplied to thehead of a bolt,

thewrenchis moved into contact with thev part adapted to prevent itsrotation, both hands otthe operator will be left free to apply aanut toor remove it *from the bolt.

It should be understood that the drawing is merely illustrative and doesnot pretend to give exact proportions. Furthermore, the said drawing isillustrative of a preferred construction, it being my expectation thatvariousehanges and modifications may be made without departing from thespirit and scope of my invention.v

What is-claimed is A wrench comprising. a bar provided with a borehavingcircular and non-circular portions,-the outer end of the circularportion of thebore being enlarged to provide a socket, a shankofnon-circular formation in cross-section slidably mounted inthe bore andprovided fat its outer end with a jaw and at its inner end with areduced screwthreaded store, an abutment removably secured within thesocket, a spring located" within the bore between the shank andabutment, a hollow handle having ts nner end reinovably positioned inthe socket in contact with the abutment, anut threaded on the stem andlocated within the inner end of the handle, and a nut-receiving elementcarried by the handle and engaging the nut and located within thesocket.

In testimony whereof I affix my signature,

J AOOB M. TWEIT.

